Emergency sluice gate



NEED STATES PATENT OFFICE JOSEPH I-IARLING TURNER BOB-LAND, OF KILMAR-NOCK, SCOTLAND Application filed September 1 EMERGENCY SLUICE GATE The subject of this invention is a portable emergency sluice gate prlmarily devlsed for closing the inlet to a discharge culvert or tunnel of astorage dam or like structure for the purpose of ole-watering the culvert and its permanent control sluice to permit inspection or repair of these parts.

As is understood, pa

rticularly when dealing with high heads of Water, previous constructions are open to ob ections.

The ordinary sliding has a limited range due to more or less serious type of sluice gate its high frictional resistance; the roller and axle type is subject to similar limitations.

The free roller type of gate recommends itself on account of its anti-friction qualities, but this advantage is countered by the disadvantage that the rollers are separate from the gate, which practically excludes its application as a portable sluice, on account of the uncertainty of the component parts finding their correct relative positions when the gate is being lowered under to close the culvert inl It is an object of this submerged conditions ct.

invention to combine the advantage of the free roller system with the advantages of a unitary structure.

Broadly, the invention consists in an emergency sluice gate comprising a frame and an assembly of free rollers constituting with said frame a self-contained unit capable of closing under its own weight irrespective of the pressure opening, while ensurin load or the size of the culvert g the correct relative position of all the parts independently ofthe conditions under which the gate is operated.

In the accompanying drawing which illustrates the invention, Flg. 1 1s a vertical section, Fig. 2 an elevati tional plan of the sluice gate.

on and Fig. 3 a see- Fig. 4 shows a practical application of the gate as an emergency closure for a culv The gate illustrated round horizontal bars ert.

comprises a serlesofi A spanning the cul- 7, 1929, Serial No. 393,171, and in Great Britain December 31, 1928;

vert opening B and fitted within a frame G to have a free rolling motion, the frame C be ing suitably braced by diagonal bars D and surmounted by a crosshead E to which lifting ropes are attached.

The small clearances between adjoining horizontal bars are sealed by round horizon tal staunching rods G which are loosely retained in their position parallel to the bars A while being free to accommodate themselves 1 to their respective contact faces when subjected to pressure in the direction indicated by the arrow H.

The top or bottom joints are sealed by the rollers A closing against the reception faces I at the boundaries.

For sealing'the side joints there are attached to the frame C flexible plates J which are self-adjusting to the reception faces when subject to pressure.

In the form illustrated the gate is made in superposed sections coupled by means of links K- For manipulating the gate hoisting gear of the fixed or travelling type is located at the top of the dam. As indicated in Fig. t crane L is employed for this purpose.

\Vhat 'I claim is 1. An emergency sluice gate for the purpose specified comprising a frame, a series of round bars fitted to said frame to have a free rolling motion, said frame and bars constituting a self-contained portable unit, and staunching rods parallel to said bars serving to seal the clearance between adjoining bars.

2. An emergency sluice gate forthe purpose specified comprising a frame, a series of ible sealing plates attached to the sides of said frame.

3. A sectional emergency sluice gate for the purpose specified comprising a plurality of frames, links coupling said frames, a series of parallel rollers fitted to each of said frames with clearance between adjoining rollers to permit of free rolling motion, and staunching rods parallel to said rollers serving to seal the clearance between adjoining rollers, said frames, rollers and staunching rods constituting a self-contained portable unit.

In testimony whereof I have signed my name to this specification.

JOSEPH HARLING TURNER BORLAND. 

